Gymnostomiella Fleisch., Musci Buitenzorg 1: 309. 1904.
Pottia sect. Splachnobryella C. Müll., Gen Musc. Frond. 389. 1901 .
Plants very small, delicate, in tufts or mats. Stems simple or forked, central strand absent; rhizoids sparse at base of stem. Axillary hairs moniliform. Leaves oblong-obovate to elliptic, spreading or erect at base, more or less rosulate, erect when dry, erect-spreading when wet; apices broadly rounded to obtuse; margins plane; costa slender, ending well below the apex, often spurred above, upper ventral superficial cells elongate, stereid cells absent, cells homogeneous; upper cells irregularly hexagonal, subquadrate to short-rectangular, thin-walled, translucent, with 1-4 simple papillae, basal cells long-rectangular, hyaline, smooth, alar cells not differentiated. Dioicous. Perichaetia and perigonia terminal, paraphyses absent. Setae elongate, smooth. Capsules ovoid, erect, smooth; exothecial cells hexagonal, thin-walled; stomata in neck; opercula obliquely rostrate; annuli rudimentary, at times adhering to the capsule mouth after dehiscence; peristome absent. Spores smooth to lightly roughened. Calyptrae cucullate.